Ruby | Set – method
Last Updated :
07 Jan, 2020
The – is an inbuilt method in Ruby that returns a new set built by duplicating the set, removing every element that appears in the given enumerable object.
Syntax: s1.name – s2.name
Parameters: The function does not takes any parameter.
Return Value: It returns a new set built by duplicating the set, removing every element that appears in the given enumerable object.
Example 1:
#Ruby program to illustrate the - method
#requires the set
require "set"
s1
= Set[1, 2, 4] s2 = Set[1, 2, 3]
#+ method used
s3
= s1 - s2
#Prints the s3
puts s3
|
Output:
Set: {4}
Example 2:
#Ruby program to illustrate the - method
#requires the set
require "set"
s1
= Set[1, 2, 4] s2 = Set[6, 5, 3]
#& method used
s3
= s1 - s2
#Prints the s3
puts s3
|
Output:
Set: {1, 2, 4}
Reference: https://devdocs.io/ruby~2.5/set#method-i-2D
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